[POWERPC] powermac: Use machine_*_initcall() hooks in platform code

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 999f5e1..cd72164 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -690,6 +690,5 @@
 	sysdev_driver_register(&pmacpic_sysclass, &driver_pmacpic);
 	return 0;
 }
-
-subsys_initcall(init_pmacpic_sysfs);
+machine_subsys_initcall(powermac, init_pmacpic_sysfs);